package com.atguigu.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

/**
 * 2022/5/7 12:01 星期六
 * GuliFeignConfig
 * Created by ASIA 乔帅阳 .
 * --
 * --
 */
@Configuration
public class GuliFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
       return new RequestInterceptor() {
           @Override
           public void apply(RequestTemplate requestTemplate) {
               //1、RequestContextHolder拿到刚进来的请求数据
               ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
               if(requestAttributes!=null){
                   HttpServletRequest request = requestAttributes.getRequest();//老请求
                   //2、获取老请求头数据，Cookie
                   if(request != null){
                       String cookie = request.getHeader("Cookie");
                       //3、同步给新请求头数据，Cookie
                       requestTemplate.header("Cookie",cookie);
                   }
               }
           }
       };
    }
}
